Grey Gull vs Aleutian Tern
Larus modestus compared with Onychoprion aleuticus
Side-by-Side Comparison
| Attribute | Grey Gull | Aleutian Tern |
|---|---|---|
| Scientific Name | Larus modestus | Onychoprion aleuticus |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 63.6 cm (25.0 in) | 52.4 cm (20.6 in) |
| Weight | 325.0 g (11.46 oz) | 104.88 g (3.70 oz) |
| Diet | -- | -- |
| Clutch Size | 1-4 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Grey Gull
Vulnerable
Aleutian Tern
About These Birds
Grey Gull
Grey Gull, 45–48 cm, breeds in the Atacama Desert of Chile, one of the driest places on earth, nesting far from the coast. Uniform grey body, white head in breeding plumage. Each night adults fly 70–100 km to Humboldt Current coast to feed on fish and invertebrates before returning to chicks.
Aleutian Tern
Aleutian Tern, 32–34 cm, breeds colonially in Alaska and Russian Far East, wintering in Southeast Asian waters — one of the most poorly tracked migrations among seabirds. Dark grey above, white below, black cap with white forehead. Piscivore; dives for small fish. Near Threatened.